Material Mol.wt./kDa Persistence length/ nm ξ/mV Rh/nm Rg/nm Gelatin A 100 10.0 +7.0 58 55 Gelatin B 100 2.0 +20.0 23 34 Chitosan 150 16.0 +38.0 340 260 Agar 900 5.0 -20.0 100 300

Table 3: List of physical properties of used biopolymers. The reported zeta potential values pertain to pH close to pHc. The full profile is shown in Figure 7. Reproduced with permission from Elsevier [95].